This App provides a combined tool for calculating the β stop angle and the length of the sling to quickly and easily find out whether the maximum permitted β angle stop is adhered to and which length of the sling is to be used in view of the given number of ropes and the given dimensions of the load. In addition, this App provides the three tools WLL Rope Slings, WLL Chain Slings and WLL Lifting Belts enabling the user upon entering the appropriate parameters to promptly establish the Working Lo